Mayville Engineering Co./Mec MEC Super Sizer Die Set Converter To 12 Gauge
$63.06
Mec Super Sizer Die Set Converter To 12 Gauge for 12-Gauge Shotguns. Converts existing Super Sizer die set to various gauges, including 10, 16, 20, 28, and .410 bore options, offering improved recoil characteristics and reduced wear on firearms. Suitable for hunters and sport shooters seeking a more manageable shotgun platform.
Out of stock
The Super Sizer die set can change your existing Super Sizer to another gauge. Available in 10 12 16 20 28 Gauge and .410 bore.
| Weight | 0.469 lbs |
|---|---|
| Dimensions | 6.350 × 2.150 × 2.150 in |
| Manufacturer | Mayville Engineering Co./Mec |
| Finish | Not specified |
| Weight | Not specified |
| Material | Not specified |
| Compatible With | MEC Super Sizer die set |
| Dimensions | Not specified |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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